The USA is probably the only country in the world (besides Eritrea) that attempts to tax the revenue of those of its citizens who live abroad. This is unfair, violates the Constitution and the International Declaration of Human Rights, as well as the constitutions and privacy laws of many countries. Stop US double taxation, FATCA and FBAR now! The price of Freedom is Eternal Vigilance (T. Jefferson)

Estimated costs to administer FATCA and chase those 6 million- billions of dollars forever. Net benefit to be derived at the best is most likely zero but is more than likely to be negative because the taxes collected are not likely to ever exceed the cost of FATCA compliance. Of course we will never know because the U.S. very conveniently refuses to establish any criteria for costs calculation.